Accounting machine



June 15,1937. F. A. HART ACCOUNTING MACHINE 13 Sheets-Sheet l Filed May 22, 1935 Cttorneg June 15, 1937. F. A. HART ACCOUNTING MACHINE Filed May 22, 1935 13 Sheets-Sheet 2 June 15, 1937. E A, HART 2,083,994`

ACCOUNTING MACHINE Filed May 22, 1933 13 Sheets-Sheet 5 Zmmntor Cttorneg I June 15, F. A HART ACCOUNTNG MACHINE VFiled May 2?, 1933 13 SheetS-Sheet 4 @www (ttorneg June 15, 1937. F. A. HART ACCOUNTING MACHINE Filed May 22, 1955 Vl5 Sheets-Sheet 5 Gttorneg Jima 15, 1937. F, A, HAR-|- ACCOUNTNG MACJHNE Filed May 22,933

(Itforneg June 15, 1937 F, A, HART l 2,083,994

AGGQUNTNG MAGNE Fild My 22, 1953 13 Shthfl Pf :inventor @ttorneg June 15, 1937i;

F. A. HART ACCOUNTING MACHINE Gtforneg .Eure '15, 1937. F. A. HART ACCOUNTING MACHINE 9 Filed May .22, 1953 13 Sheets-Sheet 9 (Ittorneg June l5, 1937. F. A. HART ACCOUNTING MACH/INE Filed May 22, 1953 13 Sheets-Sheet l0 Gttomeg F. A. HART 2,083,994

ACCOUNTING MACHINE June l5', 1937.

13 sheets-sheet 11 Filed May 22, 1935 Sweater M @i Auf md/wm Cttorneg June 15, 1937. F. A. HART 2,083,994

ACCOUNTNG MACHINE Filed May 22, 1935 l5 'Sheetsheet l2 June `i5, 193,7. F. A. HART ACCOUNTING MACHINE Filed May 22, 1933 15 Sheets-Sheet 13 Q l N @Mmm INVENTOR M ne A/ff @iyfm- ATTORNEY OO www S5@ www o@ m @o @N o@ OO @mw OO wm C@ @mm @o io@ OS @o om im @o O3 @o om 36o m2 o@ @N w1@ o@ @E @o m@ M MGZ mm MEE LZ VSE @Omwql MmwOmA AONZLZOU Patented June 15, 193? 2,033,994 ACCOUNTING MACHINE u Frederick A. HartQStamford, Conn., assigner to Remington Rand, Inc., Buialo, N. Y.. a corporation of Delaware yApplication May 22, 1933, Serial No. 672,179

6 Claims.

The present invention relates to computing and recording machines, and is especially vadapted to combined typewriting and computing machines.

The invention has for its principal object to safeguard the correctness with which these machines are operated.

Another object of the invention is to provide improved clear signalmechanism, and especially for a machine having a plurality of cross-footing totalizers.

Still another object oi the invention is to provide an improved clear' signal mechanism auto= matically operated from a. source of power.

A further object oi the invention is to provide improved means for so checking the work not only of the operator but also of preceding accounting operations that the machine will show mechanically that the work has been done correctly, oertain errors in the work so modifying the operation of the maclnne that the operator will be apprised of the fact in case a mistake has beenmade.

To the above and other ends which will hereinafter appear, my invention consists in the features of construction, arrangements of parts and combinations of devices set forth in the following description and particularly pointed out in the appended claims.

I have shown the invention in the present instance embodied 'in a No. 85 Remington electried bookkeeping machine, in which the invention may be readily included without modifying or materially modifying the existing structural feam tures .of such machine,it being one of the objects of my invention to attain this end. This machine is disclosed in part in my Patent No. 2,063,737, issued December 8, 1936, and includes the well known Wahl computing mechanism shown in Patent No. 1,270,471 to J. C. Wahl. It should be understood, however, that the invention is not restricted in its use in said machine but may be included in machines of this same general type, wherever found available.

In the regular No. 85 Remington electrified bookkeeping machine, most of the operations are performed by a continuously rotating electric motor under the control of keys, and the machine has in addition to the vertical totalizers two cross-footing`totalizers, each independently capable of addition and subtraction. According to one form of the invention each of these crossiooting totalizers is provided with an automatic clear signal so constructed that immediately following the writing of the last digit of a total the power mechanism will. in case the total has been copied correctly, cause the typewriting mecha- (Ci. zes-m59) nism to print a clear sign following the number. This sign is diilferent for the two totaliaers. Each. totalizer also prints a separate distinctive sign in case the total contained therein was negative.

In case both cross-footers are cleared by the same operation of the machine, both clear signals will be printed simultaneously one by the side oi' the other. .This form of the invention can be used in that class of work Where diflerentamounts are entered in different columns, some of them being added into one cross-footer and some into the other, but these amounts being oi auch rela@ tion to one another that both cross-iooters mili indicate the same total provided the entries have been correctly made. This form oi' the invention can aiso be used where the two cross-footers are used for the purpose oi giving a single algebraic total, the correct total appearing in one totalizer in case it is positive, and the other totalizer in case it is negative. Means may be provided whereby both totalizers will be cleared by the same total-printing operation, and also means whereby .both clear signals are simultaneously operated, thusindicating at once that both totalizers showed the same amount and that that amount was correctly copied and both totaliaers cleared; the failure of either-clear signal to operate will serve as a warning to the operator.

A simpler'form of the invention is also shown in which the clear signals are printed by hand instead of by power, the clearance being indicated by locks which prevent the depression oi.' the nec-:-

essary keys unless the totalizers are clear..

In the accompanying drawings wherein like reference characters designate correspondinglfa parts in the dierent views:

Fig. 1 is a partial frontto rear vertical section of an electrified Remington accounting machine, containing the present invention.

Fig. 2 is a right-hand side View oi' a portion oi the machine, parts being shown in section.

Fig. 3 is a fragmentary front to rear vertical section of the upper rear portion of the machine.

Fig. 4 is a rear View, partly in section on the line lim-t oi Fig. 3.

Fig. il is a top view in horizontal section on the line tlm-ii oi Fig. 3.

Fig. d is a fragmentary pian View with parts in section and parts broken away, showing the i'orward portion of the machine.

if g. 'l is an isometric skeletonized view oi' a portion of the change gear mechanism etc., the observer being at the left and back oi' the mau chine.

Fig. d is an isometric View el e. portion. or" the mechanism, as viewed from behind and at the right of the machine.

Figs. 9 and 10 are detail views. partly in front to rear vertical section, of some of the clearanceproof mechanism, as viewed from the right, the mechanism being in dierent positions in the two views.

Fig. 11 is a rear elevation, partly in vertical section, showing some of the clear signal mechanism.

Figs. 12, 13, 14, and are fragmentary views of the carriage return mechanism of the machine. Fig. 12 is an isometric view as seen from the rear and to the right. Fig. 13 is a right-hand 15 side elevation, partly in section. `Fig. 14 is a plan view, partly in section in the plane of the axis of the horizontal drive shaft. Fig. 15 is a view in right-hand side elevation showing the means for operating one of the clutches.

2o Fig. 16 is a fragmentary top elevation showing two type bars at the printing point.

Fig. 17 is an isometric view of the pick-up beam and associated parts.

Fig. 18 is an edge view of the four type bars 25 which print the clear signs.

Fig. 19 is a fragmentary front view oi the type bar segment, and showing two of the clearance types in printing positions.

Figs. 20 and 2l are fragmentary isometric views 30 of the two key levers for the key operated form of the invention.

Fig. 22 is a view of the gearing which drives the master wheel and its associated parts.

Fig. 23 is a view i vertical section through one of the vertical totalizers, the actuating mechanism and associated parts.

Fig. 24 is a fragmentary isometric view of the clearance testing device.

Fig. 25 is an isometric view taken from the rear and showing the change gear mechanism of the cross totalizers and also a portion of the hand-operated clearance proof mechanism.

Fig. 26 is an isometric View of one of the control cams.

Fig. 27 is a fragmentary isometric view of a portion of the credit balance mechanism and a portion ofthe hand-operated clearance proof mechanism.

Fig. 28 is a partial view in front to rear section and showing some of the mechanism of the computing machine.

Fig. 29 is a View of an audit sheet and ledger sheet, which may be written on the machine.

In all of the views parts have been omitted, or broken away, or shown in section, as has been found convenient.

The Remington electrified bookkeeping machine consists essentially of a Remington bookkeeping machine mounted on a power base. The frame of the Remington accounting machine comprises the usual base I (Figs. 2 and 3), corner posts 2 and top plate 3, on which last travels the paper carriage 4 supporting the platen 5 against which strike the types on the type bars 5, pivoted in a segment 'I. The heels of the type bars operate a universal bar 8, which operates a rocking frame ID, which, by a link lI I, operates the dog rocker I2 of the carriage escapement mechanism. The escapement wheel I3 is connected with a feed pinion I4, meshing with the carriage rack I5 to feed the carriage under the control of a driving spring (not shown).

The keys are arranged, as shown in Fig. 1, with three banks of character keys I6, having infront of them the space bar Il, and in iront of that 9 row of keys I8 which includes the ten numeral keys. The numeral keys not only control corresponding type bars, but also control the computing mechanism. All of the keys I6 and I8 are mounted on key levers 20 extending to the back of the machine where they are pivoted at 2l. The character key levers are interspersed with operating levers 22 which are connected to the usual bell cranks 23, which operate the type bars. The depression of any character key lever 2D couples the associated lever 22 to the power drive to operate said lever and the appropriate type bar.

The power base comprises a frame 24 on which the base I of the typewriter rests. This base carries an electric motor connected by belts to certain shafts, the principal ones of which are the usual snatch roll 25 for operating the char acter type bars, and the usual power shaft 26 for operating the computing mechanism and the numeral type bars.

In order to operate the character type bars each of the operating levers 22 (Fig. l) has a depending portion to which a hook 21 is pivoted at 28, and adapted to be engaged by the snatch roll 25. These hooks are normally held away from the snatch roll by springs 30. Pivoted on a crossshaft 3| is a series of levers 32 controlled by springs 33, and each having pivoted thereto a hook 34 engaging a finger of the appropriate hook 21. Each of the character key-levers 20 has an arm or projection 35 which, when depressed,

rocks the lever 32, and by the hook 34 draws the hook 2'! into engagement with the snatch roll, which thereupon operates the type bar after the usual fashion of these machines. The ten digit type bars are operated by different means to be described hereinafter.

The computing mechanism is of the usual Remington type. It has its own frame work attached to the typewriter frame work, the principal member thereof being a long casting 38, Figs. 2, 8, and 23. To this casting are secured various frame plates 31, of which the righthand end one is' shown in Fig. 8 attached to the end of the casting 36 by screws 38. These frame plates support various transverse frame bars and rods, such as those marked 40 in Fig. 8. The vertical totalizers 4I are mounted on the usual truck 42 supported by the various rollers shown in Fig. 23, and each totaiizer adjustably secured in place by the usual latch 43. The totalizers comprise the usual carrying wheels 44, idlers 45 and dials 4B, and also the usual Geneva transfer wheels 4'I mounted on the levers 48.

The computing mechanism is operated by the usual links 50, (Fig. 23) which rock so-called fans 5I, which by pin and slot connection 52 operate the goose neck cams 53, which in turn operate the arms 54 spirally arranged on the differential rock shaft 55 which (Fig. 22) carries the gear segment 56 which operates the master wheel. This segment is pivoted at 5l so as to allow values to be entered in only one direction of movement. rIthus the segment 58 may swing laterally into and out of engagement with the pinion 58, in case the machine is set for addition, or with the pinion Bil in case the machine is set for .subtraction, said gears being shiftable into and out of the plane of movement of the sector in a well known manner. Pinion 68 meshes with pinion 58, which latter is splined on the shaft 6I to which is rigidly secured the master wheel 62, (Fig. 23) which is adapted to mesh one after vhand totalizer 13.

another with the carrying wheels 44 of the several totalizers.

Each fan 5| has a cam projection 63 adapted to operate the universal bar 64, which is in the nature of a bail secured to the universal rock shaft 55. This rock shaft performs its usual functions in the machine. For example, it carries the spiral cam 86 (Fig. 22), which controls the slide 51, which swings the sector 56 into and out of mesh. The universal rock shaft also has an arm which operates a link 68, which rocks a cam 10, which operates the master dog 1|, whose rearwardly extending arm locks the truck 42 in position during an adding operation, and whose upstanding arm rotates the appropriate lever 48, which carries a transfer pinion 41. This universal bar mechanism also controls various locks, aligning devices, etc., all as weil known in this machine.

The two cross-foot totalizers 12 and 13, Figs. 2, 6 and 11, are mounted on the usual cross truck 14, having grooved rollers 15, running on rails 16. This truck is drawn by the usual spring 11 to its normal right-hand position where it is arrested. by an adjustable stop bar 18, Fig. 11, striking an' upright lever and deflecting it until it is arrested by the right-hand frame plate 31.

In order to move the truck 14 step-by-step leftwardin unison with the main truck 42 when one of the vertical totalizers 4| is over the master Wheel, a bracket 8| secured to the cross truck has pivoted thereto the usual pick-up beam 82 (Fig. 1'1) whose triangular tooth B3 is caught by a suitable projection from the frame plate of the totalizer in use at the time. When the vertical totalizer steps out of the adding column a pin 84 on the beam 82 is moved downward by a cam slot 85, and disconnects the tooth 83 so that the cross-truck jumps back to its initial position ready to be picked up by the next vertical totalizer that comes into use. The pick-up beam 82 is associated with the usual overthrow preventing latch 86.

The master wheels for the cross-totalizers are best shown in Fig. 25, which is a rear View. They comprise a master wheel 81 for the left-hand totalizer 12, and a master wheel 88 for the right- Motion is communicated to these master wheels by the means indicated in Fig. 28. In the casing 90, Fig. 2, of the operating mechanism for the cross-totalizers, there is a differential shaft 9| corresponding in all respects with the shaft 55, except for the absence of the arms 54, and this shaft 9| is operated from the shaft 55 by the link 92 pivoted to parallel arms projecting respectively from the shafts 55 and 9|. I'his frame also contains a, universal rockshaft 93 operated from the universal rock-shaft 65 by a link 69 pivoted to parallel arms on the two shafts. The shaft 9| carries two gear sectors, one for each of the master wheels 81 and 88 (Fig. 25), and each controlled from the rock shaft 93 in the same manner as the upper sector is controlled from the rock shaft 65.

Subtraction The mechanism whereby the vertical master wheel 62 is set for subtraction, is indicated in Fig. '1. The pinion 58 is slidably mounted on the shaft 95 of the master Wheel 62, and the pinion 60 slides right and left with the shaft 91 on which it is rotatably mounted. A lever 96 (Fig. 22) of the first order, causes the two pinions to shift in opposite directions, said lever being prolonged to project through a slot 98 in the casing to give a. visible indication of the setting. When the shaft 91 is slid to its left-hand position (to the right in Fig. '1) the pinion 60 is out of the path of segment 56 and the pinion 58 in its path, and the master wheel will add. When said shaft is shifted to its opposite position segment 56 will engage pinion B0 and the machine will subtract.

In a middle position the segment will engage neither pinion and the master wheel will not be rotated.

In order to shift the shaft 91, an arm |00 engages a notch in said shaft, said arm being mounted on the forward end of a rock shaft |0|, which at its rear end has an arm |02 having a stud |03 projecting into a cam slot |04 in a floating lever |05, which lever is pivoted at its middle on a rod |06. The lever |05 can be rocked by a key or hand lever |01 through a link |08, bell crank H0.' and link When this lever |01 is in its uppermost position, shown in Fig. '1, the pin |03 is in the middle high part of the cam slot |04, and the machine is set for addition in the vertical totalizers. When the handle |01 is pushed down to its lowermost position it will rock lever |05 counterclockwise in Fig. '1, and move the pin into the left-hand lower end of the slot, thus rocking the shaft |0| counterclockwise and setting the mechanism for subtraction. At the intermediate position pin |03 is half-way down the slot |04 and the mechanism is set for non-add or disconnect.

The cross master wheel 81, Fig. 25, is controlled by a second floating lever H2, Fig. '1, pivoted on the rod |06 and controlled by a cam follower ||3 at the front of the machine where it is acted on by the rear one 14 of two add and subtract cams mounted on the front of each vertical totalizer, Fig. 23. The follower ||3 is on the front end of a sleeve H5, Fig. '1, surrounding a shaft its. At its rear end the sleeve ||5 carries a spring returned lever ||1 which is connected by a link H8 with the floating lever ||2. The floating lever ||2 is similar in all respects to the lever |05. The pin |03, which is controlled by its cam slot |04, is mounted on a bell crank |20 which is connected by a link 12|, Figs. 7 and 25, with a lever |22 of the rst order which is pivoted to a shaft |23'of a subtract pinion |24 which is connected with the master wheel 81. This pin |03, however, normally stands in the extreme left-hand end of the slot |04, as viewed in Fig. '7, so that when the follower I3 is depressed the pin moves upward. In the case of this floating lever, therefore, the depressed position of the pin |03 is the add position, and its elevated position in the middle of the slot is its subtract position. The construction is such that when the follower |3 is in its normal upper position the master wheel 81 is set for addition, and when said follower is depressed by its cam H4 it sets the master wheel for non-add if depressed half way, and for subtraction if fully depressed.

The reversing mechanism for the master wheel 88 is controlled by a second follower |25, Figs. '1 and 23, which is controlled by the forward one Miti of the two subtract cams on each vertical totalizer. The lever arm on which this follower is mounted is rigid on the shaft H6, which at its rear end carries a spring controlled lever |21, which is connected by a link |28, Figs. r1 and 25, with a third floating lever |30, which is pivoted on a second rod |3| similar to but shorter than the rod |06. This fioating lever |30 has its cam slot |04 controlling a pin |03 mounted I on an arm |32 on the rear end of a rock shaft 75 which, at its forward end, carries an arm |33 connected with a. shaft |34 of the subtract pinion for the master wheel 88. This pin |03 normally oc cupies its upper position in the slot |04.

A correction key |35 (Figs. 7 and 27) is provided which, when depressed, reverses the action of all three master wheels whether set for addition or for subtraction. In case any master wheel is set for non-add that setting will be retained if the correction key is depressed. This key is in the nature of a lever of the first order pivoted at |36 and connected by a link |31 with a bell crank |38, the upstanding arm of which is pivoted to the rod |06, the construction being such that a depression of the key |35 slides said rod towards the right (towards th`e left in Fig. 7) a sufficient distance so that the lower end of each of the floating levers |05 and ||2 is moved half the length of the cam slot |04. In case the floating lever 05 stands in its `normal add position, shown in Fig. 7, the cam slot |04 will move leftward, as viewed in Fig. 7, until the pin |03 is in the right-hand end of it, and is set for subtraction. If this lever |05 had been set for subtraction by the lever |01 the pin |03 would have occupied the left-hand end of the slot |04, as viewed in Fig. 7, and a depression of the correction key would have caused it to engage the middle of the slot, and to set the master wheel for addition. If the lever |01 was in its middle or disconnect position the pin |03 would have been half down the left-hand incline of the slot |04. The movement of the floating lever by the correction key would have brought the middle of the right-hand incline of the slot into engagement with the pin which would, therefore, still be in the disconnect position.

In case the floating lever ||2 occupied its normal adding position, as shown in Fig. 7, a depression of the correction key would cause said pin to engage the high middle part of the slot and thus to set master wheel 81 for subtraction. If, however, the follower ||3 had been in its depressed position and the pin |03, therefore, in its adding position in the high middle part of the slot |04, then a depression of the correction key would have brought the low right-hand part of the end of the slot, as viewed in Fig. 7, into engagement with the pin, and would have set the master wheel for subtraction.

In order to control the third floating lever |30 from this correction key, the rod |06 is connected by a link |40, Figs. 7 and 25, with a lever |4| which is connected with the rod |3| and shifts this rod but in the opposite direction and with the same effect on the master Wheel 88.

In case one of the cross totalizers 12 or 13 shows a negative total, it is necessary in order to clear this totalizer to reverse its master wheel. As this amount will then be written as a negative amount instead of as ordinarily a positive amount, it is necessary in order to have the work correct to reverse the other two master wheels at the same time. This could be done by the correction key |35, but the machine is equipped with a special credit balance key |42 for this purpose, said credit balance key not only reversing the master wheels, but performing some other functions as will be explained. This key |42 (Fig. 27) is mounted on a three-armed lever, one arm |43 of which acts as a latch lever, and on the third arm is mounted a release key |44. This threearmed lever is pivoted at |46 to an arm |46 mounted on a rock shaft |41, which in the Remington typewriter controls the ribbon `mounted in an auxiliary frame |53.

shifting mechanism in such wise that when the credit balance key is depressed it causes the printing to be in red instead of in black. This shaft is journaled near its forward end in a frame plate |49. The arm |46 is prolonged beyond the shaft |41 and is connected by a link |48 with the correction key lever |35 so that a depression of the credit balance key reverses the master wheel. 'I'his key, when depressed, is latched down and remains down until released by striking the key |44.

The power mechanism for operating the computing mechanism and the numeral type bars is well known in the art and its essential elements are shown in Fig. l. The continuously rotating power shaft 26 carries a series of cams |50, one

for each numeral key, which cams normally stand in the position shown in Fig. l, being so held by individual clutches, one member |5| of which is normally arrested by a stop lever |52 pivotally The stop lever |52 is adapted to be tripped to release the clutch for a single rotation of the cam disk |60 by means of a push bar |54 pivoted to the numeral key lever at |55, and controlled by a spring |56. In Fig. 1 the first key I8 shown is one of the clearance-proof keys which does not carry one of these bars |54. This clearanceproof lever is shown broken away in order to show the numeral key lever behind it.

Each cam disk controls a follower miler |51, journaled on an operating arm |58, pivoted on a cross shaft |60, and urged downward by a strong spring |6|. Near its rear end the lever |58 is connected by a link |62 with a spacing lever |63 pivoted on a cross shaft |64 in the typewriter frame, to which lever is pivoted the lower end of the pull link 50 which operates the computing mechanism.

When a numeral key is depressed the first result is to add the corresponding number by the mechanism `iust described. The corresponding type bar is operated by the up-stroke of the lever |68. Pivoted to the end of said lever at |66 is a dog |66, controlled by a spring |61 so as to press its upper end rearward into engagement with the forward arm of a lever |68, pivoted on a cross shaft |10. The rear arm of this lever carries a stud |1| engaging in a slot in the forward end of an operating lever |12 which is pivoted like the other levers of this general character on the cross bar 2| at the rear oi' the machine. This lever |12 operates the appropriate type bar i Clearance-:proof mechanism In each of the cross-totalizers 12 and 13, a comb |16 (Figs. 10 and 24) is pivoted in the side plates and its tines rest against the peripheries of the dial pinions |16 each of which has one iortened tooth |11 so located as to register with the comb when the dial indicates zero. The construction is such that when all of the dials register zero, the comb |15 can swing slightly toward the front, but as soon as any one or more of the dials is turned to indicate some other number, the full-length teeth will force the comb rearward. 'I'he comb |15 has an arm |18 articulated with a bell crank whose vertical arm |80 projects through a slot in the top of the casing, and which has a spring |8| pressing the comb |15 against the pinions. When the totalizer is clear, the arm |80 occupies its rear position shown in full lines in Fig. 10, and` when itis not clear this arm occupies its forward position shown in dotted lines.

The mechanism just described constitutes clearance testing or indicating mechanism, the state of the totalizer being shown by the position of the arm |80.

All of the mechanism thus far described is or may be of the usual Remington construction, and, as far as the present invention is concerned it may be of any suitable construction.

According to one form of the present invention, the upper end of the arm |80 is notched, having two fingers |82 and |83, and between them a bail bar |84 normally rests on the bottom of the notch as shown in Fig. 9, this bar being longer than the extent of travel of the crosstruck, so that the bar always rests on the arm. The bar |84 is carried on two arms |85 secured to a floating rock shaft |88 the whole constituting a bail having a pivotal motion about the shaft |88. The latter is pivoted in two upright a'rms |81 secured to a rock shaft |88 pivoted in two of the frame plates 31. The rocking frame |81, |88, is drawn rearwardly by a spring |90 (Fig. 2) against a stop pin |9|, but it can swing a short distance forward (Fig. 10), thus giving a bodily "forward motion to the bail |84, |85.

The parts are they occupy after a total has been written, and the totalizer is, therefore, clear and ready to begin a new computation. When a number is written and entered in this totalizer the long teeth of the pinions |16 will force the comb |15 rearward, and the arm |80 forward, thus pulling the shaft |88 slightly further towardthe front of the machine than is indicated in Fig. 10. When this occurs an upper prolongation of one of the arms |81 will snap into engagement with a.

Aspring-controlled latch |92, pivoted on a shaft ferent positions depending When the arrnl80 moves to its rear.

|93, which shaft is slidably mounted in brackets |94, secured to the frame casting 35, Fig. 8.4 The parts will remain in this position throughout the computation. and until thetotalizer is clear, the arm |80 sliding back and forth under the bar |84 as the cross-truck travels leftward-and jumps back. f

When the total is written and the totalizer is cleared the arm |80 will move rearward to the position shown in Fig.10, but the bar '|84 will not move rearward being held by the latch' |92.

A cam plate |95, having an inclined edge, as

l shown in Fig. 8, is mounted on the front face |84 by two screws entering holes |98 There is a series of these holes so |95 can be adjusted to difon the width of the of the bar in the bar. that the cam plate totalizer. position the forward'finger |83 of said armcomes into line with this cam plate, and when ythe totalizer jumps back to its right-hand position the top of this finger engaging the incline of the cam momentarily raises the bail bar |84 to its upper position, shown in Fig. l0, and it is this upward pivotal motion of the bail which initiates the printing of the clear sign.

The bar must not remain in its forward position as otherwise a clear signal would be printed at every reciprocation of the cross-truck, as long as it remained clear. Means are, therefore, provided to restore the bail |84, |85 immediately to its Fig. 9 bodily position. To this end the latch |92 is pivoted between two collars on the shaft |93 Y permits said shown in Fig. 9 in the position I called credit balance) it is which is free to slide a short distance endwise, and is held in its normal position by a compression spring |81. The shaft has an arm |98, adjustably mounted thereon and standing in the path ofk an arm or bracket 200, Figs. 8 and 11, secured to the cross truck 14. The construction is such that when this truck jumps back to its right-hand position it slides the shaft |93 lengthwise so as to move the latch |92 away from the arm |81 and arm and the parts connected with it to be pulled by the spring |90 back to the Fig. 9 position. As soon as the cross-truck is drawn away from its normal position by a vertical totalizcr the spring |91 restores the shaft |93 tof'its normal position. This shaft slides back and forth at every reciprocation of the cross-truck, and for that reason the parts are so proportioned that when the arm |80 moves forward from its Fig. 9

- position the upper end of the arm |81 is moved a little further forward than shown in Fig. 10 so that the latch |92 can make this right and left reciprocation without interference from the arm.

cross totalizers, as clearly indicated in Figs. 6, 8,

and 11. Both of the two latches |92 are mounted on the same sliding shaft |93, which shaft has one flat end, as shown in Fig. 8, to prevent its rotation. ,f

In order for the upward pivotal motion of the bar '|84 to initiate the printing of a clear sign, one of the arms |85 is prolonged toward the rear. In the case of the right-hand (left-hand in Fig. 8) mechanism this arm is provided with a pin which enters a slot inthe forward end of an arm 20|. mounted on a -rockshaft 202, which rock shaft is journaled in a bracket plate 3 of the typewriter. At its inner end or right-hand end, as shown in Fig. 8 this shaft has an arm 204 connected by a link 205 with an arm 205 mounted on the end of a rock shaft 201, which is iournaled in a quill 208 (Fig. 8) passing through v2 |2, and whose lower -end stands over one of the character key levers of the machine. The construction is such that when the bail bar |84 moves upward this push bar 2| is thrust downward, and depresses the key lever.

The left-hand bail |84, |85 is similarly connected through an arm on a rock shaft 2|9, a link 2li and rock shaft 2|4, to a second push bar 2|5 203, secured to the top standing beside the bar 2|| and similarly guided,

its lower end standing over the second key lever to the right of the one covered by the push bar 2| The construction is such that if one of the cross totalizers is clearedthe appropriate pn'nting key lever will be depressed to print a clear signI and if both totaliaers are cleared at the same v operation two printing key levers will be depressed to print two clear signs simultaneously.

In case the total'to be printed is negative (a sodesirable that a disnnenve sign be printed to indicate that fatt. When a credit balance occurs the operator depresses the credit balance key v| 42 in order to print the total in red, and to reverse the master wheels. The shaft |41, which is rocked by this key, has two depending arms 2|8 connected by light 4wires 2 i1, to the two push bars 2| and 215, with the result that when the credit balance key is depressed thesek push bars are pushed slightly to the right, the guide slots in the plate 2 I 2 being elongated to permit of this motion. This moves these two bars from over the key levers originally covered by them to two other key levers respectively, as will be clearly understood from Fig. 8.

As shown in the present instance clearance of theright-hand cross totalizer 13 from a positive total is indicated by printing a star, and printing of a similar total from the left-hand totalizer 12 is indicated by printing a triangle. Clearance of the totalizer 13 from a negative total is indicated by printing the letters CR, and clearance of the totalizer 12 from a negative total is indicated by printing the same letters, but in a peculiar style, shown in the drawings. In various places in the drawings the parts have been indicated by the star and the triangle for convenience of designation. The four key levers 2|), which are used for printing these signs, are designated by their respective signs in Fig. 8, and the signs are shown on the key caps in Fig. 6. These four key levers have, or are connected with the same projections 35, trip levers 32, hooks 21 and operating levers 22, and bell cranks 23 as the other character key levers, and they print their respective characters much the same as any other key lever. In the drawings they are shown extended into the keyboard and provided with key caps for manual operation, but usually they would be cut off just in front of the front guide comb 2|8, Fig. 1. As it is desirable that these four key levers be consecutive the star key has been extended into the front row of keys where in Fig. 1 it is shown with a part broken out so as to expose the numeral key lever behind it.

As it is sometimes desirable to print two clear signs at once, the two type bars 6 which print the positive and negative clear signs for the rightu hand or star tctalizer, pass through the regular center guide 220 of the typewriter and print in the usual way, but the other two type bars which print the clear signs for the left-hand orftriangle totalizer are set at a different angle and so disposed that they print just to the right of the regular printing point, as shown in Figs. 16 and 19. To permit of this the right-hand part of the cener guide is cut away, as shown in Fig. 19.

It is believed that the mode of operation o! the mechanism will be understood from what has been said above. At the beginning of a problem the parts stand in the position shown in Fig. 9. As soon as a number is added in one of the totalizers its arm i moves toward the front of the machine, its nger |82 drawing with it the bail |84, |85, |86, and the arm |81 moves into position to be latched by |92. As number after number is added or substracted the parts continue Ain this position, the arm |80 sliding along the bar |84 as the cross truck moves back and forth. On the last key stroke which clears the totalizer the arm |80 moves to its rear position shown in Fig. 10, and on the jump-back of the cross truck its finger |83 raises the cam |85 and depresses one of the key levers 20, as shown in Fig. 10. This depression is only momentary because the bracket 200 slides the shaft |83 lengthwise and releases the arm |81, which immediately moves back to the position shown in Fig. 9, drawing the cam plate from over the finger |83 and allowing the parts to return to the position shown in Fig. 9. Meanwhile, however, the hook 21, Fig. 1, has been moved into engagement with the snatch roll 25, and the clear sign is printed. This may happen as to either of the cross totalizers singly, or it may happen as to both of them at the same operation. In case of a negative total the credit balance key |42 would have been depressed shifting the push bars 2|| and 2|5 toward the right so as to print the appropriate sign or signs to indicate a negative total.

A practical instance of one way of using the present invention, is illustrated in Fig. 29, which shows fragments of an audit sheet 22| and a ledger sheet 222 used in the bookkeeping in a savings bank. The audit sheet, greatly shortened up and down, and the depositors ledger sheet, are shown in the relative positions they occupy on the platen 5 of the typewriter. The ledger sheet contains at the top the name-of the depositor and his account number, and on the body of it columns for date, withdrawals, `deposits and the resulting balances. Amounts written on this sheet are duplicated by carbon paper on the audit sheet. The latter is wider than the ledger, and contains in addition to the ledger columns otherA columns for account number. ledger pick up, and pass book balance. At each transaction the depositor hands to the teller a deposit ticket or a withdrawal ticket as the case may be, together with his pass book. 'I'he teller enters in the pass book the amount deposited or withdrawn, together with the depositors new balance, which he computes mentally; and he also writes the amount of the new balance on the ticket, which ilnally nds its way to the operator of the present machine. She has an audit sheet in her machine, on which she enters the transactions ior the day. When she comes to the ticket under consideration, she inserts into the machine the ledger sheet having the same account number and writes on the audit sheet and ledger sheet the items shown in Fig. 29. The ledger pick up is the last preceding balance, which she copies from the ledger sheet. The pass book balance is copied from the ticket where the teller had written it; also the withdrawal or deposit is copied from the ticket.

Each of the rive columns for amounts of money is represented on the truck 38 by a vertical totalizer 4|, which, as an entry is being made in that column, picks upthe cross truck 1I. 'Ihe control cams ||4 for the left-hand or triangle cross totalizer 12, and |26 for the right-hand or star totalizer 13, are set on these ve vertical totalizers so as to cause the machine to operate as follows: the ledger pick up is added in 12 and not added in 13; the pass book balance is idded in 13 and not added in 12; withdrawals are subtracted in 12 and not entered in 13; de posits are added in 12 and not entered in 1I; and, nally, the balance is subtracted in both 12 and 13. In short, the totalizer 13 is set for addition in the pass book balance column, for subtraction in the balance column, and at disconnect in all other columns; while totalizer 12 is set at add in the ledger pick up and deposits columns, at subtract in the withdrawal and balance columns, and at disconnect in the pass book balance column.

It will be perceived that if the work is all correctly done, when the carriage reaches the balance column both totalizers will show the same "balance, both will be cleared when that balance is correctly copied from, say, totalizers 12, and both clear-signs will be printed as shown in Fig. 29. Any one of the following errors will prevent the two clear-signs from being printed simuitaneously 1 It the teller enters the new 75 75 over-credits being written in black and underwhich carries a pulley 23| driven by a belt from 75/ aosacu balance incorrectly on the ticket. (2) If the operator inserts the Wrong ledger sheet in the machine. (3) If the operator copies or picks up the ledger balance incorrectly. (4) If the operator picks up the pass book balance incorrectly from the ticket. (5) If the operator posts the deposit or withdrawal incorrectly, either by copying the amount incorrectly or by posting it in the wrong column. If the machine automatically prints both clear signs, it is proof that all of the above operations were performed correctly. It will be noted that this far reaching proof of correct work requires of the operator no additional labor except that required to copy the pass book balance from the ticket. Even this should be done anyway, as a record of the entry made by the teller in the depositors pass book.

This mechanism affords a further proof as follows: The ve vertical totalizers 4| preserve totals of the amounts entered in their respective columns on the audit sheet during the entire days Work. At the end of the day, after the last entry, the operator writes the line marked control, ilrst reversing the vertical master wheel by setting the lever |01 at subtract. This does not reverse the cross master wheels. The amounts in the control line, including the last or balance". are all copied from the several vertical totalizers, and each is the total of yits respective column for the day. These several totals are entered in the cross totalizers in exactly the same way as a line of items, and if the entire days work has been correctly done, the copying oi the balance will clear both cross totalizers, as indicated by the printing of both clear signs.

As the vertical master wheel was set at subtract in the operation, all of the vertical totalizers will be cleared. In short, all totalizers will then be clear, ready for the next days work.

In practice, the audit sheet may have at the right of the balance column another column headed Dierence", which may be used as tollows: On the main truck 42, this column'would be represented by a totalizer whose cams ||4 and |26 would set cross totalizers 12 for disconnect and cross totalizer 13 for, say, subtract.

In case of a failure of both clear signs printing, the operator knows that a mistake has been made. If on inspection she nds that the error is her own, she corrects it in the manner regularly practiced with these machines, whereupon the two signs will be automatically printed. But she may find that the error occurred before the work reached her; that is to say, in the particular instance described, it may be thatthe teller has entered the wrong balance in the pass book `and on the ticket. This she cannot correct. It,l as above supposed, she copies the balance from totalizer lll, this will have been cleared and the amount of the tellers error will appear on totalizer 13, as a positive amount if the teller entered too large a balance, or negatively as a compleinent if he entered too small a balance. In the former case, the operator steps the carriage into the difference column and writes there the amount of the over-credit as it appears on totalizer 13, which clears that totalizer. In case of a negative error, the operator depresses the credit balance key and writes the amount of the undercredit. This reverses the master Wheel, adds the amount necessary to clear totalizer 13, and causes it to be printed in red. At the end of the day, the dierence column contains a list of any erroneous entries made by the teller in pass-hooks,

credits in red. This list may be used in any suitable way to bring about the necessary corrections.

In case the teller has made errors the writing of the balance in the control line will not clear totalizer 13. Any such errors will, however, have been entered in the difference vertical totalizer positively or negatively according as they were overor under-credit, and their balance will appear in that totalizer. When this balance is copied in the control column it will clear both the vertical totalizer and also the cross totalizer 13 if the work has been correctly done.

It will be seen that it is desirable that the operator always copythe balance from the same one of the two cross totalizers. In order to insure that she does that, some users set up the machine, that is to say, the cams I4 and |26, so that amounts are entered in cross totalizer 13 the reverse of that described above. In this way the amount of the balance will appear on that totalizer by\its complement which is not so easily read as the true amount as it appears on totalizer l2.

It will be obvious that if desired the machine can be used as an algebraic machine, by arranging the, cams ||4 and.|26 in each instance the reverse of each other, that is to say, on each vertical totalizer where one cam is set for add the other is set for subtract. In that case both totalizers will always show the same balance, in its true amount on one totalizer and by its complement on the other, all positive balances appearing in true g'ures on one of the totalizers and all negative balances in true figures on the other totalizer. Clearing one totalizer would also clear the other.

As thus far described, it has been left to the operator, or to the auditor on examination of the audit sheet, to observe that-both clear signs were printed, but the invention also includes means ior calling the operators attention at once at any failure of the printing of both signs. 'I'his means may be of various kinds, such as an audible or other noticeable signal. In the form shown in the present instance, advantage is taken for this purpose of the automatic carriage return mechanism ordinarily employed in the Remington accounting machine. This mechanism is so arranged that when the typewriter carriage reaches a certain step'in its leftward travel, the motor of the machine is automatically coupled to the carriage and returns it to its right-hand position and line-spaces the paper. According to one form of the present invention this will not occur unless both clear signs are printed simultaneously. If the carriage does not return the operator will find the accustomed routine of her work interrupted and the machine brought to a stand-still. This she cannot help observing.

Automatic carriage return mechanisms, including that in use in the Remington accounting machine, are well known in the art, and any suitable carriage return mechanism may be used for the present purpose. That used in the Remington accounting machine can be sufilciently well understood for the present purpose from Figs. l2, 13, 14, and 15 of the drawings. As shown in Fig. 2, a rack 223 is mounted on the rear rail of the carriage 4, and it meshes with a pinion 224 fast on the upper end of a shaft 225, journaled in the top plate 3 and in certain frame brackets. Loose on this shaft is a worm wheel 226 meshing with a worm 221 fast on a transverse shaft 228. This shaft is coaxial with a shaft 230 

